S82.024M Nondisplaced longitudinal fracture of right patella, subsequent encounter for open fracture type I or II with nonunion

Name of the Condition

• Nondisplaced longitudinal fracture of right patella, subsequent encounter for open fracture type I or II with nonunion

Summary

A nondisplaced longitudinal fracture of the right patella is a vertical break in the kneecap that remains in its normal alignment. This type of fracture involves a crack along the bone’s length without shifting of the fragments, preserving knee stability. The injury is classified as open (type I or II), meaning the skin was breached during the initial trauma, and it is documented as a subsequent encounter due to nonunion, where the fracture has failed to heal properly.

Causes

Direct trauma to the knee, such as a fall onto the kneecap, a forceful blow, or a sudden contraction of the quadriceps muscle. High-impact events like sports injuries or motor vehicle accidents are common triggers. The open nature of the fracture indicates the skin was breached during the injury, and nonunion may result from inadequate initial treatment, poor blood supply, or infection.

Risk Factors

• Participation in activities with a high risk of knee injury, such as contact sports or skiing.
• Osteoporosis or other bone-weakening conditions.
• Previous knee injuries or surgeries.
• Advanced age, which may reduce bone density.
• Poor initial fracture management or delayed treatment.

Symptoms

• Sudden, severe pain in the knee.
• Swelling and bruising around the kneecap.
• Inability to straighten the knee or bear weight.
• Visible deformity or a gap in the kneecap area.
• A "popping" sensation at the time of injury.
• Open wound over the kneecap (type I or II).
• Persistent pain or instability indicating nonunion.

Diagnosis

A physical examination to assess knee movement, swelling, and tenderness. Imaging studies, typically X-rays, to confirm the fracture and evaluate bone alignment. CT scans may be used to assess complex fractures or nonunion. Clinical evaluation of the open wound and healing status is essential to determine the fracture type and nonunion.

Treatment Options

• Surgical intervention, such as internal fixation, to stabilize the fracture and promote healing.
• Wound care for the open fracture to prevent infection.
• Physical therapy to restore knee function and strength.
• Bone grafting or other procedures to address nonunion.
• Pain management and anti-inflammatory medications.

Prognosis and Follow-Up

Prognosis depends on the success of treatment and the extent of nonunion. Follow-up imaging and clinical assessments are necessary to monitor healing. Physical therapy is critical for recovery, and long-term monitoring may be required to address persistent instability or pain.

Complications

• Infection at the fracture site or open wound.
• Chronic pain or instability.
• Delayed union or nonunion.
• Arthritis in the knee joint.
• Nerve or blood vessel damage.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Use protective gear during sports or high-risk activities.
• Maintain bone health through diet and exercise.
• Follow post-treatment guidelines to support healing.

When to Seek Professional Help

Seek immediate medical attention for severe pain, swelling, or inability to bear weight. Contact a healthcare provider if symptoms worsen or if there are signs of infection, such as fever or increased redness.

Tips for Medical Coders

Document the fracture type (open I or II), laterality (right), and the presence of nonunion. Ensure the encounter is coded as subsequent to reflect ongoing treatment for nonunion. Include details of the open wound and any surgical interventions to support accurate coding.